I'm unable to use postcode data to generate polygons, where previously I have been able to. Data is formatted per these instructions, as it has been previously: https://doc.arcgis.com/en/power-bi/get-started/prepare-your-data.htm
Editing an existing map, where polygons could be created (i.e. clearing the location field and then dragging the postcode field in again) produces the same error. What was working, is no longer working, I assume since the 1 December update?
Screenshots demonstrate polygons previously generated, and subsequently unable to be re-generated, with corresponding error messages.
Edit of same document as described
Previously working document
